------------[ cut here ]------------ kernel BUG at fs/gfs2/quota.c:331! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 25392 Comm: gfs2_quotad/syz Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331 Code: 0d fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 89 e1 0d fe e9 62 ff ff ff e8 8f 9e a3 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90004d97c08 EFLAGS: 00010293 RAX: ffffffff84220251 RBX: ffff888060474150 RCX: ffff888028e1bd00 RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000 RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520009b2f68 R12: ffff8880604741c0 R13: dffffc0000000000 R14: ffff888060474180 R15: 1ffff1100c08e838 FS: 0000000000000000(0000) GS:ffff888125560000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0f0cca4000 CR3: 000000002c13f000 CR4: 0000000000350ef0 Call Trace: gfs2_quota_sync+0x3cf/0x470 fs/gfs2/quota.c:1362 gfs2_quotad+0x2b9/0x6e0 fs/gfs2/quota.c:1608 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331 Code: 0d fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 89 e1 0d fe e9 62 ff ff ff e8 8f 9e a3 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90004d97c08 EFLAGS: 00010293 RAX: ffffffff84220251 RBX: ffff888060474150 RCX: ffff888028e1bd00 RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000 RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520009b2f68 R12: ffff8880604741c0 R13: dffffc0000000000 R14: ffff888060474180 R15: 1ffff1100c08e838 FS: 0000000000000000(0000) GS:ffff888125560000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0f0cca4000 CR3: 000000002c13f000 CR4: 0000000000350ef0